JP2000040405A - Attaching device for indicator lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase fitting force, and prevent an engaging operation part from colliding with an obstacle and the like. SOLUTION: A bracket 13 is disposed to support an indicator lamp 10 on an upper part of a tightening cylinder 14 capable of fitting into a support 20, and a lower circumferential wall of the tightening cylinder 14 is divided into a plurality of pieces in a circumferential direction, and a screw rod 16 is inserted in the tightening cylinder 14, and a tool fitting body 17 is provided wherein a tool is engaged with a protrusion by protruding an upper end 16a of the screw rod 16 upward from the bracket 13, and a fitting piece 18 capable of fitting to the tightening cylinder 14 from a lower direction is disposed to the lower end of the screw rod 16. The cross section area of the fitting piece 18 is set to be slightly larger in proportion to downward direction, and the upper cross section area is set to be slightly smaller than the inner cross section area of the tightening cylinder 14, and the lower cross section is set to be slightly larger than the inner cross section area of the tightening cylinder 14, and among either of the tool fitting body 17 and the fitting piece 18, one of them is screwed to the screw rod 16, and another of them is fixed the screw rod 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device such as a sign installed at a road construction site, for example.

[0002]

2. Description of the Related Art FIG.
In FIG. 5, reference numeral 1 denotes a sign light that emits light such as red light, and integrally has a small-diameter leg 1a at a lower portion. Reference numeral 2 denotes a clamp-type mounting device mounted on the leg 1a of the indicator light 1. The mounting device 2 inverts the clamp main body 3 bent in a U shape, and fixes the back piece 3a to the leg 1a of the sign light 1 with a screw. One of the right and left pieces 3b and 3c, for example, a screw rod 4 on the right side 3c. Are screwed orthogonally from the outside, and an operating knob 4a is integrally formed on the right end of the screw rod 4, and a large-diameter seat 4b is rotatably locked on the left end.

Then, the clamp main body 3 is fitted from above to a portable column 5 installed at a road construction site or the like, and the knob 4a is operated to tighten the screw rod 4, thereby to clamp the left side of the clamp main body 3. The sign 5 is fixed to the support 5 by tightening the support 5 with the support 3b and the abutment 4b.

[0004]

In the prior art, the right end of the threaded rod 4, ie, the knob 4a, protrudes largely rightward (laterally) from the clamp body 3, so that this portion contacts an obstacle or the like. Bends and inadvertent rotation, loosening the clamping force. In addition, since the lower portions of the left and right pieces 3a and 3b of the clamp main body 3 are open, when the screw rod 4 is tightened, the left and right pieces 3a and 3b are easily deformed in the separating direction, and the engaging force with the column 5 is increased. Can not do. And the like. The present invention provides a novel sign light mounting device which solves the above-mentioned drawbacks by fitting a tightening cylinder into a support, expanding the tightening cylinder radially outward and frictionally engaging the inner surface of the support. The purpose is to obtain.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is configured as follows. That is, a fitting cylinder that can be fitted is provided in a hollow support, a bracket that supports a sign light is provided on the upper part of the fastening cylinder, and a lower peripheral wall of the fastening cylinder is divided into a plurality of pieces in the circumferential direction, and the And a tool engaging body for engaging a tool with the projecting portion by projecting an upper end portion of the screw bar upward from the bracket. The cross-sectional area of the engaging piece is gradually increased downward, the cross-sectional area of the upper portion is slightly smaller than the inner cross-sectional area of the tightening cylinder, and the The area is slightly larger than the inner cross-sectional area of the tightening cylinder, and one of the tool engagement body and the engagement piece is screwed to the screw rod, and the other is fixed to the screw rod. Things. In this case, it is preferable that the cross-sectional shapes of the tightening cylinder and the engagement piece are polygonal. Preferably, the tool engagement body is fixed to the screw bar, and the engagement piece is screwed to the screw bar.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional side view showing a first embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG.
Is a sectional view corresponding to II-II in a state in which the tightening cylinder is frictionally engaged with the column, and FIG. 4 is a partial sectional side view showing the second embodiment.

In FIG. 1, reference numeral 10 denotes a sign lamp that emits light of red, yellow, or the like, and integrally has a small-diameter leg 11 below. Reference numeral 12 denotes an attachment device attached to the leg 11 of the sign light 10. The mounting device 12 is as follows. That is, a rectangular bracket 13 elongated in the left-right direction is provided by a metal plate material, and the leg 11 of the indicator light 10 is placed on the upper surface of the left end of the bracket 13 and screwed,
A fastening pipe 14 made of a square pipe is fixed to the lower surface of the right end by welding downward. The tightening cylinder 14 is a support 20 made of a square pipe.
The outer dimensions are such that they can be fitted with a slight gap inside.

The lower peripheral wall 14a of the tightening cylinder 14 is divided into a plurality of parts in the circumferential direction by slits 15 extending in the vertical direction. That is, as shown in FIG. 2, the center of each side of the lower peripheral wall 14a is vertically cut to form a slit 15, and the slit 15 divides the lower peripheral wall 14a into four in the circumferential direction. A screw rod 16 having an engagement piece 18 welded to the lower end thereof is inserted through the shaft center of the tightening cylinder 14, and an upper end 16 a of the screw rod 16 is projected upward from the bracket 13. Is screwed (screw-fitted) with the tool engagement body 17 composed of a nut with which the.

The engaging piece 18 has a truncated pyramid shape in which the cross-sectional area gradually increases downward, the cross-sectional area of the upper portion 18a is slightly smaller than the inner cross-sectional area of the tightening cylinder 14, and The cross-sectional area is slightly larger than the inner cross-sectional area of the tightening cylinder 14. Then, the sign lamp 10 is attached to the support 20 by the following operation. That is, with the upper end of the engaging piece 18 loosely fitted to the lower end of the tightening cylinder 14, the upper end 16 a of the screw rod 16 is attached to the bracket 13.
And a tool engaging body (nut) 17 is loosely screwed into the upper end 16a.
Is fitted to the upper part of the column 20.

Next, a tool such as a wrench is engaged with the tool engaging member 17, and the tool engaging member 17 is rotated in the screwing direction. Then, the upper end portion of the engagement piece 18 is the tightening cylinder 1.
4 is prevented from rotating by engaging with the lower end of the engaging piece 1.
Since the screw rod 16 is also prevented from rotating by the screw 8, as the tool engagement body 17 is rotated in the screwing direction, as shown by the phantom line in FIG. 14 is moved upward. Thereby, each divided lower peripheral wall 14a of the tightening cylinder 14 is pressed radially outward by the oblique side 18c of the engaging piece 18, and the width of the slit 15 is changed from the state of W1 of FIG. 2 to the state of W of FIG.
2, the outer peripheral surface of each of the divided lower peripheral walls 14a comes into pressure contact with the inner peripheral surface 20a of the column 20 and frictionally engages with each other, as shown in FIG. Will be attached.

FIG. 4 shows a second embodiment of the present invention. In this apparatus, the above-mentioned screw rod is formed by a bolt 19, and its head 19a is used as a tool engaging body with which a tool engages. Then, the bolt 19 is inserted into the tightening cylinder 14 from above the bracket 13, and the lower end of the screw portion 19 b on the lower side protrudes below the tightening cylinder 14. Screwed (screw-fit) to the part. Further, a cylindrical protective tube 21 surrounding the head 19a is fixed upright on the upper surface of the bracket 13, so that the head 19a can be operated with a relatively special tool such as a box spanner. To prevent inadvertent operation by the user. The other structure is substantially the same as that of the first embodiment.

According to the second embodiment, the bolt 19
When a tool such as a box spanner is engaged with the head 19a of the bolt and the bolt 19 is rotated in the screwing direction, the engaging piece 18
Since the upper end thereof is fitted to the lower end of the tightening cylinder 14 and is prevented from rotating, as the bolt 19 is rotated in the screwing direction, as shown by a virtual line in FIG.
8 is moved upward with respect to the bolt 19 and the tightening cylinder 14. As a result, each lower peripheral wall 14a of the tightening cylinder 14 expands radially outward and presses against the inner peripheral surface 20a of the column 20 to frictionally engage with the column 20 in the same manner as described above. It will be attached to.

According to the second embodiment, since the engagement piece 18 and the screw portion 19b of the bolt 19 are not exposed to the outside, the screw portion is hardly rusted, and the operation is stabilized for a long time. Further, since the bolt 19 does not move up and down with respect to the bracket 13, the head 19a does not collide with an obstacle or the like.
In addition, by forming a window for tool operation on the leg 11 of the sign light 10, the sign light 10 can be mounted directly above the head 19a to reduce the size. In addition, the above-mentioned tightening cylinder 1
4 may be formed by a cylindrical member. Further, the engagement piece 18 described above may be formed in a conical shape having a larger diameter toward the lower side.

[0014]

As is apparent from the above description, according to the present invention, a tightening cylinder is fitted in a column, the lower peripheral wall of the tightening cylinder is divided in the circumferential direction, and the divided lower peripheral wall is radially outwardly. And the frictional engagement with the inner surface of the support post, so that the engagement force can be increased, and the engagement operation part does not protrude outward from the support post, and the tightening force is inadequate due to obstacles etc. Will not loosen. In addition, since the cross-sectional shape of the fastening cylinder and the engagement piece is made polygonal,
The engaging piece does not run idle, and the tightening operation is facilitated.
In addition, since the tool engagement body is fixed to the screw rod and the engagement piece is screwed to the screw rod, the threaded portion between the engagement piece and the screw rod is not exposed to the outside, and the operation is performed for a long time. As the screw rod does not move up and down, it does not collide with obstacles or the like. And so on.

[Brief description of the drawings]

FIG. 1 is a partial sectional side view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a cross-sectional view corresponding to II-II in a state in which a tightening cylinder is frictionally engaged with a column.

FIG. 4 is a partial sectional side view showing a second embodiment.

FIG. 5 is a side view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Indicator light 11 Leg 12 Mounting device 13 Bracket 14 Tightening cylinder 14a Lower peripheral wall 15 Slit 16 Screw bar 16a Upper end 17 Tool engagement body 18 Engagement piece 18a Upper part 18b Lower part 18c Slope 19 Bolt (screw rod) 19a Head (tool member) Combined) 19b Screw part 20 Post 20a Inner peripheral surface 21 Protection tube

Claims (3)

[Claims] 1. A fitting tube (14) which can be fitted in a hollow support (20), and a sign lamp (1) is provided above the fastening tube (14).
0) is provided, and a bracket (1) is provided.
The lower peripheral wall of 4) is divided into a plurality in the circumferential direction, a screw rod (16) is inserted into the tightening cylinder (14), and an upper end (16a) of the screw rod (16) is connected to the bracket (1).
3) A tool engaging body (17) is provided which projects upward from the 3) and engages a tool with the projecting portion. The tool engaging body (17) is fitted to the lower end of the screw rod (16) to the tightening cylinder (14) from below. An engaging piece (18) is provided, and the engaging piece (18) has a sectional area gradually increasing downward, and an upper sectional area is slightly smaller than an inner sectional area of the tightening cylinder (14). The cross-sectional area of the lower part is slightly larger than the inner cross-sectional area of the tightening cylinder (14), and the tool engaging body (17) and the engaging piece (1) are formed.
8) and one of them is screwed into the screw rod (16),
An installation device for a sign light, characterized in that the other is fixed to said screw rod (16). 2. The sign light mounting device according to claim 1, wherein the cross-sectional shapes of the fastening cylinder and the engagement piece are polygonal. 3. The tool engaging member (17) is connected to the screw rod (1).
6) and fix the engaging piece (18) to the screw rod (1).
3. A mounting device for a sign light according to claim 1, wherein said device is screwed into (6).